Do I need to book a time slot with my Merlin Annual Pass? All Annual Passholders must reserve their spot by pre-booking their visit online to guarantee entry. Please pre-book here. Related articles Can I pre-book my visit to other attractions in advance? How does the time slot system work and what time should I turn up? How do I purchase Merlin Annual Pass Friends and Family tickets for WILD LIFE Sydney? What is the Koala Breakfast? How do I collect my Merlin Annual Pass?